+++ /dev/null
-/*
- * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#define _LGPL_SOURCE
-#include <popt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <common/mi-lttng.h>
-#include <lttng/domain-internal.h>
-
-#include "../command.h"
-
-static char *opt_event_list;
-static int opt_kernel;
-static char *opt_channel_name;
-static char *opt_session_name;
-static int opt_userspace;
-static int opt_disable_all;
-static int opt_jul;
-static int opt_log4j;
-static int opt_python;
-static int opt_event_type;
-
-#ifdef LTTNG_EMBED_HELP
-static const char help_msg[] =
-#include <lttng-disable-event.1.h>
-;
-#endif
-
-enum {
- OPT_HELP = 1,
- OPT_TYPE_SYSCALL,
- OPT_TYPE_TRACEPOINT,
- OPT_TYPE_PROBE,
- OPT_TYPE_FUNCTION,
- OPT_TYPE_ALL,
- OPT_LIST_OPTIONS,
-};
-
-static struct lttng_handle *handle;
-static struct mi_writer *writer;
-
-static struct poptOption long_options[] = {
- /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
- {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
- {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
- {"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
- {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
- {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
- {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
- {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
- {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
- {"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
- {"syscall", 0, POPT_ARG_NONE, 0, OPT_TYPE_SYSCALL, 0, 0},
- {"probe", 0, POPT_ARG_NONE, 0, OPT_TYPE_PROBE, 0, 0},
- {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TYPE_TRACEPOINT, 0, 0},
- {"function", 0, POPT_ARG_NONE, 0, OPT_TYPE_FUNCTION, 0, 0},
- {"all", 0, POPT_ARG_NONE, 0, OPT_TYPE_ALL, 0, 0},
- {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
- {0, 0, 0, 0, 0, 0, 0}
-};
-
-static
-const char *print_channel_name(const char *name)
-{
- return name ? : DEFAULT_CHANNEL_NAME;
-}
-
-static
-const char *print_raw_channel_name(const char *name)
-{
- return name ? : "<default>";
-}
-
-static
-const char *print_event_type(const enum lttng_event_type ev_type)
-{
- switch (ev_type) {
- case LTTNG_EVENT_ALL:
- return "any";
- case LTTNG_EVENT_TRACEPOINT:
- return "tracepoint";
- case LTTNG_EVENT_PROBE:
- return "probe";
- case LTTNG_EVENT_FUNCTION:
- return "function";
- case LTTNG_EVENT_FUNCTION_ENTRY:
- return "function entry";
- case LTTNG_EVENT_SYSCALL:
- return "syscall";
- default:
- return "";
- }
-}
-
-/* Mi print a partial event.
- * enabled is 0 or 1
- * success is 0 or 1
- */
-static int mi_print_event(const char *event_name, int enabled, int success)
-{
- int ret;
-
- LTTNG_ASSERT(writer);
- LTTNG_ASSERT(event_name);
-
- /* Open event element */
- ret = mi_lttng_writer_open_element(writer, config_element_event);
- if (ret) {
- goto end;
- }
-
- /* Print the name of event */
- ret = mi_lttng_writer_write_element_string(writer,
- config_element_name, event_name);
- if (ret) {
- goto end;
- }
-
- /* Print enabled ? */
- ret = mi_lttng_writer_write_element_bool(writer,
- config_element_enabled, enabled);
- if (ret) {
- goto end;
- }
-
- /* Success ? */
- ret = mi_lttng_writer_write_element_bool(writer,
- mi_lttng_element_command_success, success);
- if (ret) {
- goto end;
- }
-
- /* Close event element */
- ret = mi_lttng_writer_close_element(writer);
-end:
- return ret;
-}
-
-/*
- * disable_events
- *
- * Disabling event using the lttng API.
- */
-static int disable_events(char *session_name)
-{
- int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS;
- int enabled = 1, success = 1;
- char *event_name, *channel_name = NULL;
- struct lttng_domain dom;
- struct lttng_event event;
-
- memset(&dom, 0, sizeof(dom));
-
- /* Create lttng domain */
- if (opt_kernel) {
- dom.type = LTTNG_DOMAIN_KERNEL;
- } else if (opt_userspace) {
- dom.type = LTTNG_DOMAIN_UST;
- } else if (opt_jul) {
- dom.type = LTTNG_DOMAIN_JUL;
- } else if (opt_log4j) {
- dom.type = LTTNG_DOMAIN_LOG4J;
- } else if (opt_python) {
- dom.type = LTTNG_DOMAIN_PYTHON;
- } else {
- /* Checked by the caller. */
- abort();
- }
-
- channel_name = opt_channel_name;
-
- handle = lttng_create_handle(session_name, &dom);
- if (handle == NULL) {
- ret = -1;
- goto error;
- }
-
- /* Mi print the channel and open the events element */
- if (lttng_opt_mi) {
- ret = mi_lttng_writer_open_element(writer, config_element_channel);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
-
- ret = mi_lttng_writer_write_element_string(writer,
- config_element_name, print_channel_name(channel_name));
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
-
- /* Open events element */
- ret = mi_lttng_writer_open_element(writer, config_element_events);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
- }
-
- memset(&event, 0, sizeof(event));
- /* Set default loglevel to any/unknown */
- event.loglevel = -1;
-
- /* opt_event_type contain the event type to disable at this point */
- event.type = opt_event_type;
-
- if (opt_disable_all) {
- command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
- if (command_ret < 0) {
- ERR("%s", lttng_strerror(command_ret));
- enabled = 1;
- success = 0;
-
- } else {
- enabled = 0;
- success = 1;
- MSG("All %s events of type %s are disabled in channel %s",
- lttng_domain_type_str(dom.type),
- print_event_type(opt_event_type),
- print_channel_name(channel_name));
- }
-
- if (lttng_opt_mi) {
- ret = mi_print_event("*", enabled, success);
- if (ret) {
- ret = CMD_ERROR;
- goto error;
- }
- }
- } else {
- /* Strip event list */
- event_name = strtok(opt_event_list, ",");
- while (event_name != NULL) {
- DBG("Disabling event %s", event_name);
-
- strncpy(event.name, event_name, sizeof(event.name));
- event.name[sizeof(event.name) - 1] = '\0';
- command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
- if (command_ret < 0) {
- ERR("%s of type %s : %s (channel %s, session %s)",
- event_name,
- print_event_type(opt_event_type),
- lttng_strerror(command_ret),
- command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
- ? print_raw_channel_name(channel_name)
- : print_channel_name(channel_name),
- session_name);
- warn = 1;
- success = 0;
- /*
- * If an error occurred we assume that the event is still
- * enabled.
- */
- enabled = 1;
- } else {
- MSG("%s %s of type %s disabled in channel %s for session %s",
- lttng_domain_type_str(dom.type),
- event_name,
- print_event_type(opt_event_type),
- print_channel_name(channel_name),
- session_name);
- success = 1;
- enabled = 0;
- }
-
- if (lttng_opt_mi) {
- ret = mi_print_event(event_name, enabled, success);
- if (ret) {
- ret = CMD_ERROR;
- goto error;
- }
- }
-
- /* Next event */
- event_name = strtok(NULL, ",");
- }
- }
-
-end:
- if (lttng_opt_mi) {
- /* Close events element and channel element */
- ret = mi_lttng_close_multi_element(writer, 2);
- if (ret) {
- ret = CMD_ERROR;
- }
- }
-error:
- /* if there is already an error preserve it */
- if (warn && !ret) {
- ret = CMD_WARNING;
- }
-
- /* Overwrite ret if an error occurred */
- ret = command_ret ? command_ret : ret;
-
- lttng_destroy_handle(handle);
- return ret;
-}
-
-/*
- * cmd_disable_events
- *
- * Disable event to trace session
- */
-int cmd_disable_events(int argc, const char **argv)
-{
- int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
- static poptContext pc;
- char *session_name = NULL;
- const char *leftover = NULL;
- int event_type = -1;
-
- pc = poptGetContext(NULL, argc, argv, long_options, 0);
- poptReadDefaultConfig(pc, 0);
-
- /* Default event type */
- opt_event_type = LTTNG_EVENT_ALL;
-
- while ((opt = poptGetNextOpt(pc)) != -1) {
- switch (opt) {
- case OPT_HELP:
- SHOW_HELP();
- goto end;
- case OPT_TYPE_SYSCALL:
- opt_event_type = LTTNG_EVENT_SYSCALL;
- break;
- case OPT_TYPE_TRACEPOINT:
- opt_event_type = LTTNG_EVENT_TRACEPOINT;
- break;
- case OPT_TYPE_PROBE:
- opt_event_type = LTTNG_EVENT_PROBE;
- break;
- case OPT_TYPE_FUNCTION:
- opt_event_type = LTTNG_EVENT_FUNCTION;
- break;
- case OPT_TYPE_ALL:
- opt_event_type = LTTNG_EVENT_ALL;
- break;
- case OPT_LIST_OPTIONS:
- list_cmd_options(stdout, long_options);
- goto end;
- default:
- ret = CMD_UNDEFINED;
- goto end;
- }
-
- /* Validate event type. Multiple event type are not supported. */
- if (event_type == -1) {
- event_type = opt_event_type;
- } else {
- if (event_type != opt_event_type) {
- ERR("Multiple event type not supported.");
- ret = CMD_ERROR;
- goto end;
- }
- }
- }
-
- ret = print_missing_or_multiple_domains(
- opt_kernel + opt_userspace + opt_jul + opt_log4j +
- opt_python,
- true);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
-
- /* Ust and agent only support ALL event type */
- if ((opt_userspace || opt_jul || opt_log4j || opt_python)
- && opt_event_type != LTTNG_EVENT_ALL) {
- ERR("Disabling userspace and agent (-j | -l | -p) event(s) based on instrumentation type is not supported.\n");
- ret = CMD_ERROR;
- goto end;
- }
-
- opt_event_list = (char*) poptGetArg(pc);
- if (opt_event_list == NULL && opt_disable_all == 0) {
- ERR("Missing event name(s).\n");
- ret = CMD_ERROR;
- goto end;
- }
-
- leftover = poptGetArg(pc);
- if (leftover) {
- ERR("Unknown argument: %s", leftover);
- ret = CMD_ERROR;
- goto end;
- }
-
- if (!opt_session_name) {
- session_name = get_session_name();
- if (session_name == NULL) {
- ret = CMD_ERROR;
- goto end;
- }
- } else {
- session_name = opt_session_name;
- }
-
- /* Mi check */
- if (lttng_opt_mi) {
- writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
- if (!writer) {
- ret = -LTTNG_ERR_NOMEM;
- goto end;
- }
-
- /* Open command element */
- ret = mi_lttng_writer_command_open(writer,
- mi_lttng_element_command_disable_event);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
-
- /* Open output element */
- ret = mi_lttng_writer_open_element(writer,
- mi_lttng_element_command_output);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
- }
-
- command_ret = disable_events(session_name);
- if (command_ret) {
- success = 0;
- }
-
- /* Mi closing */
- if (lttng_opt_mi) {
- /* Close output element */
- ret = mi_lttng_writer_close_element(writer);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
-
- ret = mi_lttng_writer_write_element_bool(writer,
- mi_lttng_element_command_success, success);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
-
- /* Command element close */
- ret = mi_lttng_writer_command_close(writer);
- if (ret) {
- ret = CMD_ERROR;
- goto end;
- }
- }
-
-end:
- if (!opt_session_name && session_name) {
- free(session_name);
- }
-
- /* Mi clean-up */
- if (writer && mi_lttng_writer_destroy(writer)) {
- /* Preserve original error code */
- ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
- }
-
- /* Overwrite ret if an error occurred in disable_events */
- ret = command_ret ? command_ret : ret;
-
- poptFreeContext(pc);
- return ret;
-}
projects / lttng-tools.git / blobdiff